if you are holding a convex lens at arm's length and looking at a distant street light, you observe the up-side down image of the street light to be on your side of the lens and 65.0mm from the lens. you then train the lens on your study lamp. a) if your study lamp is 80.0mm from the lens, how far will the image of the lamp be from the lens? NOTE: answer in millimeters. b) if you're study lamp light bulb is spherical with diameter of 25.0mm, what will the diameter of its image be in millimeters